package cn.wolfcode.car.business.service.impl;


import cn.wolfcode.car.business.domain.StatementItem;
import cn.wolfcode.car.business.mapper.StatementItemMapper;
import cn.wolfcode.car.business.query.StatementItemQuery;
import cn.wolfcode.car.business.service.IStatementItemService;
import cn.wolfcode.car.business.service.IStatementService;
import cn.wolfcode.car.common.base.page.TablePageInfo;
import cn.wolfcode.car.common.exception.BusinessException;
import cn.wolfcode.car.common.util.Convert;
import com.github.pagehelper.PageHelper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.List;

@Service
@Transactional
public class StatementItemServiceImpl implements IStatementItemService {

    @Autowired
    private StatementItemMapper statementItemMapper;

    @Autowired
    private IStatementService statementService;


    @Override
    public TablePageInfo<StatementItem> query(StatementItemQuery qo) {
        PageHelper.startPage(qo.getPageNum(), qo.getPageSize());
        return new TablePageInfo<StatementItem>(statementItemMapper.selectForList(qo));
    }


    @Override
    public void save(StatementItem statementItem) {
        statementItemMapper.insert(statementItem);
    }



    @Override
    public StatementItem get(Long id) {
        return statementItemMapper.selectByPrimaryKey(id);
    }


    @Override
    public void update(StatementItem statementItem) {


        statementItemMapper.updateByPrimaryKey(statementItem);
    }

    @Override
    public void deleteBatch(String ids) {
        Long[] dictIds = Convert.toLongArray(ids);
        for (Long dictId : dictIds) {
            statementItemMapper.deleteByPrimaryKey(dictId);
        }
    }

    @Override
    public List<StatementItem> list() {
        return statementItemMapper.selectAll();
    }

    @Override
    public List<StatementItem> queryByStatementId(Long statementId) {
        return statementItemMapper.selectByStatementId(statementId);
    }

    @Override
    public void saveItems(List<StatementItem> items) {
        if(items != null && items.size() > 0){
            StatementItem last = items.remove(items.size() - 1);
            statementItemMapper.deleteByStatementId(last.getStatementId());
            if(items.size() > 0){
                BigDecimal totalAmount = new BigDecimal("0.0");
                BigDecimal totalQuantity = new BigDecimal("0");
                for (StatementItem item : items) {
                    statementItemMapper.insert(item);
                    totalAmount = totalAmount.add(item.getItemPrice().multiply(new BigDecimal(item.getItemQuantity())));
                    totalQuantity = totalQuantity.add(new BigDecimal(item.getItemQuantity()));
                }
                if(totalAmount.compareTo(last.getItemPrice())<0){
                    throw new BusinessException("优惠金额大于总金额");
                }
                statementService.updateAmount(last.getStatementId(), totalAmount, totalQuantity,last.getItemPrice() );
            }else{
                statementService.updateAmount(last.getStatementId(),
                        new BigDecimal("0.0"),  new BigDecimal("0"),new BigDecimal("0.0") );
            }
        }else{
            throw  new BusinessException("参数异常");
        }
    }

    @Override
    public void deleteByStatementId(Long id) {
        statementItemMapper.deleteByStatementId(id);
    }
}
